Here is some info correct me if i'm wrong but you mentioned you looked at this thread at royalark.net but have you considered this POSSIBLY....
m. at the Gulistan Palace, Tehran, 12th October 1950 (div. ca 1983), Pari Sima Pahlavi (b. 7th July 1927 (royalark.net)
she'd be 23 in 1950 looks...